/////////////////////////////////////////////////////////////////////////////////////////////////
//
//  Tencent is pleased to support the open source community by making libpag available.
//
//  Copyright (C) 2021 Tencent. All rights reserved.
//
//  Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
//  except in compliance with the License. You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
//  unless required by applicable law or agreed to in writing, software distributed under the
//  license is distributed on an "as is" basis, without warranties or conditions of any kind,
//  either express or implied. see the license for the specific language governing permissions
//  and limitations under the license.
//
/////////////////////////////////////////////////////////////////////////////////////////////////

#include "Semaphore.h"

namespace pag {
void Semaphore::signal() {
  std::lock_guard<std::mutex> autoLock(locker);
  count++;
  condition.notify_one();
}

void Semaphore::wait() {
  std::unique_lock<std::mutex> autoLock(locker);
  if (count <= 0) {
    condition.wait(autoLock);
  }
  count--;
}
}  // namespace pag